While cooking the lentils, fry the onion on low heat and ad the garlic. Fry for another minute, then set aside. When the lentils are nearly ready, add in the chopped spinach (or zucchini) to the lentils and stir. When the lentils are done, add the onion and garlic and the remaining ingredients. Mix well. If you want firmer patties add some oats. Heat plenty of oil in a frying pan. Fry the patties on medium heat, a few minutes on each side.